494 lines
20 KiB
C++
494 lines
20 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2015-2015. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/container for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#include <boost/container/pmr/global_resource.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <boost/intrusive/detail/math.hpp>
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#include "derived_from_memory_resource.hpp"
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#include "memory_resource_logger.hpp"
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using namespace boost::container::pmr;
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template<class PoolResource>
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struct derived_from_pool_resource
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: public PoolResource
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{
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derived_from_pool_resource(const pool_options& opts, memory_resource* upstream)
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: PoolResource(opts, upstream)
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{}
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explicit derived_from_pool_resource(memory_resource *p)
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: PoolResource(p)
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{}
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explicit derived_from_pool_resource(const pool_options &opts)
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: PoolResource(opts)
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{}
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derived_from_pool_resource()
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: PoolResource()
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{}
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using PoolResource::do_allocate;
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using PoolResource::do_deallocate;
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using PoolResource::do_is_equal;
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};
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template<class PoolResource>
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void test_default_constructor()
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{
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//With default options/resource
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{
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derived_from_memory_resource dmr;
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dmr.reset();
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PoolResource m;
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//test postconditions
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BOOST_TEST(m.upstream_resource() == get_default_resource());
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_default_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(dmr.do_allocate_called == false);
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}
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}
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template<class PoolResource>
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void test_upstream_constructor()
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{
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//With a resource, default options
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{
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derived_from_memory_resource dmr;
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dmr.reset();
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PoolResource m(&dmr);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == &dmr);
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_default_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(dmr.do_allocate_called == false);
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}
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}
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template<class PoolResource>
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void test_options_constructor()
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{
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//Default options
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{
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memory_resource_logger mrl;
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BOOST_TEST(mrl.m_info.size() == 0u);
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set_default_resource(&mrl);
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pool_options opts;
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PoolResource m(opts);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == get_default_resource());
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_default_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(mrl.m_info.size() == 0u);
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}
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//Too large option values
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{
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memory_resource_logger mrl;
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BOOST_TEST(mrl.m_info.size() == 0u);
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set_default_resource(&mrl);
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pool_options opts;
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opts.max_blocks_per_chunk = pool_options_default_max_blocks_per_chunk+1;
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opts.largest_required_pool_block = pool_options_default_largest_required_pool_block+1;
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PoolResource m(opts);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == get_default_resource());
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_default_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(mrl.m_info.size() == 0u);
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}
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//Too small option values
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{
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memory_resource_logger mrl;
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BOOST_TEST(mrl.m_info.size() == 0u);
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set_default_resource(&mrl);
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pool_options opts;
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opts.largest_required_pool_block = pool_options_minimum_largest_required_pool_block-1u;
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PoolResource m(opts);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == get_default_resource());
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_minimum_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(mrl.m_info.size() == 0u);
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}
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//In range option values
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{
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memory_resource_logger mrl;
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BOOST_TEST(mrl.m_info.size() == 0u);
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set_default_resource(&mrl);
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pool_options opts;
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opts.max_blocks_per_chunk = pool_options_default_max_blocks_per_chunk;
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opts.largest_required_pool_block = pool_options_minimum_largest_required_pool_block;
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PoolResource m(opts);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == get_default_resource());
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_minimum_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(mrl.m_info.size() == 0u);
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}
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}
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template<class PoolResource>
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void test_options_upstream_constructor()
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{
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//Default options
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{
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derived_from_memory_resource dmr;
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dmr.reset();
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pool_options opts;
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PoolResource m(opts, &dmr);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == &dmr);
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_default_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(dmr.do_allocate_called == false);
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}
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//Too large option values
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{
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derived_from_memory_resource dmr;
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dmr.reset();
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pool_options opts;
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opts.max_blocks_per_chunk = pool_options_default_max_blocks_per_chunk+1;
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opts.largest_required_pool_block = pool_options_default_largest_required_pool_block+1;
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PoolResource m(opts, &dmr);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == &dmr);
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_default_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(dmr.do_allocate_called == false);
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}
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//Too small option values
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{
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derived_from_memory_resource dmr;
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dmr.reset();
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pool_options opts;
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opts.largest_required_pool_block = pool_options_minimum_largest_required_pool_block-1u;
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PoolResource m(opts, &dmr);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == &dmr);
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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BOOST_TEST(m.options().largest_required_pool_block == pool_options_minimum_largest_required_pool_block);
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//test it does not allocate any memory
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BOOST_TEST(dmr.do_allocate_called == false);
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}
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//In range option values
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{
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derived_from_memory_resource dmr;
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dmr.reset();
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pool_options opts;
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opts.max_blocks_per_chunk = pool_options_default_max_blocks_per_chunk;
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opts.largest_required_pool_block = pool_options_minimum_largest_required_pool_block;
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PoolResource m(opts, &dmr);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == &dmr);
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//max blocks is unchanged in this implementation
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BOOST_TEST(m.options().max_blocks_per_chunk == pool_options_default_max_blocks_per_chunk);
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//largest block is rounded to pow2
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BOOST_TEST(m.options().largest_required_pool_block == bi::detail::ceil_pow2(opts.largest_required_pool_block));
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//test it does not allocate any memory
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BOOST_TEST(dmr.do_allocate_called == false);
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}
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}
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template<class PoolResource>
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void test_options()
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{
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//In range option values
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{
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derived_from_memory_resource dmr;
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dmr.reset();
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pool_options opts;
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opts.max_blocks_per_chunk = pool_options_default_max_blocks_per_chunk/2u;
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opts.largest_required_pool_block = (pool_options_default_largest_required_pool_block
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- pool_options_minimum_largest_required_pool_block) | std::size_t(1); //guaranteed to be non power of 2.
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PoolResource m(opts, &dmr);
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//test postconditions
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BOOST_TEST(m.upstream_resource() == &dmr);
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//max blocks is unchanged in this implementation
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BOOST_TEST(m.options().max_blocks_per_chunk == opts.max_blocks_per_chunk);
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//largest block is rounded to pow2
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BOOST_TEST(m.options().largest_required_pool_block == bi::detail::ceil_pow2(opts.largest_required_pool_block));
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//test it does not allocate any memory
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BOOST_TEST(dmr.do_allocate_called == false);
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}
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}
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template<class PoolResource>
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void test_do_allocate_deallocate()
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{
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memory_resource_logger mrl;
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{
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derived_from_pool_resource<PoolResource> dmbr(&mrl);
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{
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//First block from pool 0
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dmbr.do_allocate(1, 1);
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//It should allocate the pool array plus an initial block
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BOOST_TEST(mrl.m_info.size() == 2u);
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//Second block from pool 0
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dmbr.do_allocate(1, 1);
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//It should allocate again (with 2 chunks per block)
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BOOST_TEST(mrl.m_info.size() == 3u);
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//Third block from pool 0
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dmbr.do_allocate(1, 1);
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//It should NOT allocate again (previous was a 2 block chunk)
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BOOST_TEST(mrl.m_info.size() == 3u);
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}
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}
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BOOST_TEST(mrl.m_mismatches == 0u);
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BOOST_TEST(mrl.m_info.size() == 0u);
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//Allocate and deallocate from the same chunk to test block caching
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{
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derived_from_pool_resource<PoolResource> dmbr(&mrl);
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{
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//First block from pool 0
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void *p = dmbr.do_allocate(1, 1);
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//It should allocate the pool array plus an initial block
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BOOST_TEST(mrl.m_info.size() == 2u);
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//No cached, as initial blocks per chunk is 1
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == 0u);
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//Deallocate and allocate again
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dmbr.do_deallocate(p, 1, 1);
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//Cached
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == 1u);
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p = dmbr.do_allocate(1, 1);
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//Reused
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == 0u);
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//It should have NOT allocated (block reuse)
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BOOST_TEST(mrl.m_info.size() == 2u);
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//Allocate again 2 times (a 2 block chunk is exhausted)
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void *p2 = dmbr.do_allocate(1, 1);
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//1 left cached
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == 1u);
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void *p3 = dmbr.do_allocate(1, 1);
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//Cache exhausted
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == 0u);
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//Single chunk allocation happened
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BOOST_TEST(mrl.m_info.size() == 3u);
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//Now deallocate all (no memory is freed, all cached)
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dmbr.do_deallocate(p2, 1, 1);
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dmbr.do_deallocate(p3, 1, 1);
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dmbr.do_deallocate(p, 1, 1);
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == 3u);
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BOOST_TEST(mrl.m_info.size() == 3u);
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}
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}
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BOOST_TEST(mrl.m_mismatches == 0u);
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BOOST_TEST(mrl.m_info.size() == 0u);
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//Now test max block per chunk
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{
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pool_options opts;
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//so after max_blocks_per_chunk*2-1 allocations, all new chunks must hold max_blocks_per_chunk blocks
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opts.max_blocks_per_chunk = 32u;
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derived_from_pool_resource<PoolResource> dmbr(opts, &mrl);
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{
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std::size_t loops = opts.max_blocks_per_chunk*2-1u;
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while(loops--){
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dmbr.do_allocate(1, 1);
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}
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//pool array + log2(max_blocks_per_chunk)+1 chunks (sizes [1, 2, 4, ...])
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const std::size_t num_chunks = bi::detail::floor_log2(opts.max_blocks_per_chunk)+1u;
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BOOST_TEST(mrl.m_info.size() == 1u + num_chunks);
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//Next allocation should allocate max_blocks_per_chunk blocks in a chunk so max_blocks_per_chunk-1 should remain free
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dmbr.do_allocate(1, 1);
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BOOST_TEST(mrl.m_info.size() == 1u + num_chunks + 1u);
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == (opts.max_blocks_per_chunk-1u));
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//Exhaust the chunk and allocate a new one, test max_blocks_per_chunk is not passed again
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loops = opts.max_blocks_per_chunk;
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while(loops--){
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dmbr.do_allocate(1, 1);
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}
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BOOST_TEST(mrl.m_info.size() == 1u + num_chunks + 2u);
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == (opts.max_blocks_per_chunk-1u));
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}
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}
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BOOST_TEST(mrl.m_mismatches == 0u);
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BOOST_TEST(mrl.m_info.size() == 0u);
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//Now test max block per chunk
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{
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pool_options opts;
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//so after max_blocks_per_chunk*2-1 allocations, all new chunks must hold max_blocks_per_chunk blocks
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opts.max_blocks_per_chunk = 32u;
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derived_from_pool_resource<PoolResource> dmbr(opts, &mrl);
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{
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std::size_t loops = opts.max_blocks_per_chunk*2-1u;
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while(loops--){
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dmbr.do_allocate(1, 1);
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}
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//pool array + log2(max_blocks_per_chunk)+1 chunks (sizes [1, 2, 4, ...])
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BOOST_TEST(dmbr.pool_next_blocks_per_chunk(0u) == opts.max_blocks_per_chunk);
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const std::size_t num_chunks = bi::detail::floor_log2(opts.max_blocks_per_chunk)+1u;
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BOOST_TEST(mrl.m_info.size() == 1u + num_chunks);
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//Next allocation should allocate max_blocks_per_chunk blocks in a chunk so max_blocks_per_chunk-1 should remain free
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dmbr.do_allocate(1, 1);
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BOOST_TEST(dmbr.pool_next_blocks_per_chunk(0u) == opts.max_blocks_per_chunk);
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BOOST_TEST(mrl.m_info.size() == 1u + num_chunks + 1u);
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BOOST_TEST(dmbr.pool_cached_blocks(0u) == (opts.max_blocks_per_chunk-1u));
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}
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}
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BOOST_TEST(mrl.m_mismatches == 0u);
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BOOST_TEST(mrl.m_info.size() == 0u);
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//Now test different pool sizes
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{
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pool_options opts;
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//so after max_blocks_per_chunk*2-1 allocations, all new chunks must hold max_blocks_per_chunk blocks
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opts.max_blocks_per_chunk = 1u;
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derived_from_pool_resource<PoolResource> dmbr(opts, &mrl);
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const pool_options &final_opts = dmbr.options();
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//Force pool creation
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dmbr.do_deallocate(dmbr.do_allocate(1, 1), 1, 1);
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//pool array plus first pool's chunk allocation
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BOOST_TEST(mrl.m_info.size() == 2u);
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//pool count must be:
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// log2(the maximum block) - log2(the minimum block) + 1. Example if minimum block is 8, and maximum 32:
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// log(32) - log2(8) + 1u = 3 pools (block sizes: 8, 16, and 32)
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const std::size_t minimum_size = dmbr.pool_block(0u);
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const std::size_t maximum_size = final_opts.largest_required_pool_block;
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BOOST_TEST(dmbr.pool_count() == (1u + bi::detail::floor_log2(maximum_size) - bi::detail::floor_log2(minimum_size)));
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for(std::size_t i = 0, s = minimum_size, max = dmbr.pool_count(); i != max; ++i, s*=2){
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//Except in the first pool, each cache should be empty
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BOOST_TEST(dmbr.pool_cached_blocks(i) == std::size_t(i == 0));
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dmbr.do_deallocate(dmbr.do_allocate(s/2+1, 1), s/2+1, 1);
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dmbr.do_deallocate(dmbr.do_allocate(s-1, 1), s-1, 1);
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dmbr.do_deallocate(dmbr.do_allocate(s, 1), s, 1);
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//pool array plus each previous chunk allocation
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BOOST_TEST(mrl.m_info.size() == (1u + i + 1u));
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//as we limited max_blocks_per_chunk to 1, no cached blocks should be available except one
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BOOST_TEST(dmbr.pool_cached_blocks(i) == 1u);
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}
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//Now test out of maximum values, which should go directly to upstream
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//it should be directly deallocated.
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void *p = dmbr.do_allocate(maximum_size+1, 1);
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BOOST_TEST(mrl.m_info.size() == (1u + dmbr.pool_count() + 1u));
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dmbr.do_deallocate(p, maximum_size+1, 1);
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BOOST_TEST(mrl.m_info.size() == (1u + dmbr.pool_count()));
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}
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BOOST_TEST(mrl.m_mismatches == 0u);
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BOOST_TEST(mrl.m_info.size() == 0u);
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}
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template<class PoolResource>
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void test_do_is_equal()
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{
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//`this == dynamic_cast<const PoolResource*>(&other)`.
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memory_resource_logger mrl;
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derived_from_pool_resource<PoolResource> dmbr(&mrl);
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derived_from_pool_resource<PoolResource> dmbr2(&mrl);
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BOOST_TEST(true == dmbr.do_is_equal(dmbr));
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BOOST_TEST(false == dmbr.do_is_equal(dmbr2));
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//A different type should be always different
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derived_from_memory_resource dmr;
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BOOST_TEST(false == dmbr.do_is_equal(dmr));
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}
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template<class PoolResource>
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void test_release()
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{
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memory_resource_logger mrl;
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{
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pool_options opts;
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//so after max_blocks_per_chunk*2-1 allocations, all new chunks must hold max_blocks_per_chunk blocks
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opts.max_blocks_per_chunk = 4u;
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derived_from_pool_resource<PoolResource> dmbr(opts, &mrl);
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const pool_options &final_opts = dmbr.options();
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const std::size_t minimum_size = dmbr.pool_block(0u);
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const std::size_t maximum_size = final_opts.largest_required_pool_block;
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const std::size_t pool_count = 1u + bi::detail::floor_log2(maximum_size) - bi::detail::floor_log2(minimum_size);
|
|
|
|
std::size_t expected_memory_allocs = 0;
|
|
for(std::size_t i = 0, imax = pool_count, s = minimum_size; i != imax; s*=2, ++i){
|
|
for(std::size_t j = 0, j_max = opts.max_blocks_per_chunk*2u-1u; j != j_max; ++j){
|
|
dmbr.do_allocate(s, 1);
|
|
}
|
|
//One due to the pool array, and for each pool, log2(max_blocks_per_chunk)+1 allocations
|
|
expected_memory_allocs = 1 + (bid::floor_log2(opts.max_blocks_per_chunk) + 1u)*(i+1);
|
|
//pool array plus each previous chunk allocation
|
|
BOOST_TEST(mrl.m_info.size() == expected_memory_allocs);
|
|
}
|
|
//Now with out-of-pool sizes
|
|
for(std::size_t j = 0, j_max = opts.max_blocks_per_chunk*2u-1u; j != j_max; ++j){
|
|
dmbr.do_allocate(maximum_size+1, 1);
|
|
BOOST_TEST(mrl.m_info.size() == ++expected_memory_allocs);
|
|
}
|
|
//Now release memory and check all memory allocated through do_allocate was deallocated to upstream
|
|
dmbr.release();
|
|
BOOST_TEST(mrl.m_info.size() == 1u);
|
|
}
|
|
BOOST_TEST(mrl.m_mismatches == 0u);
|
|
BOOST_TEST(mrl.m_info.size() == 0u);
|
|
}
|
|
|
|
template<class PoolResource>
|
|
void test_destructor()
|
|
{
|
|
memory_resource_logger mrl;
|
|
{
|
|
pool_options opts;
|
|
//so after max_blocks_per_chunk*2-1 allocations, all new chunks must hold max_blocks_per_chunk blocks
|
|
opts.max_blocks_per_chunk = 4u;
|
|
derived_from_pool_resource<PoolResource> dmbr(opts, &mrl);
|
|
const pool_options &final_opts = dmbr.options();
|
|
const std::size_t minimum_size = dmbr.pool_block(0u);
|
|
const std::size_t maximum_size = final_opts.largest_required_pool_block;
|
|
const std::size_t pool_count = 1u + bi::detail::floor_log2(maximum_size) - bi::detail::floor_log2(minimum_size);
|
|
|
|
std::size_t expected_memory_allocs = 0;
|
|
for(std::size_t i = 0, imax = pool_count, s = minimum_size; i != imax; s*=2, ++i){
|
|
for(std::size_t j = 0, j_max = opts.max_blocks_per_chunk*2u-1u; j != j_max; ++j){
|
|
dmbr.do_allocate(s, 1);
|
|
}
|
|
//One due to the pool array, and for each pool, log2(max_blocks_per_chunk)+1 allocations
|
|
expected_memory_allocs = 1 + (bid::floor_log2(opts.max_blocks_per_chunk) + 1u)*(i+1);
|
|
//pool array plus each previous chunk allocation
|
|
BOOST_TEST(mrl.m_info.size() == expected_memory_allocs);
|
|
}
|
|
//Now with out-of-pool sizes
|
|
for(std::size_t j = 0, j_max = opts.max_blocks_per_chunk*2u-1u; j != j_max; ++j){
|
|
dmbr.do_allocate(maximum_size+1, 1);
|
|
BOOST_TEST(mrl.m_info.size() == ++expected_memory_allocs);
|
|
}
|
|
//Don't release, all memory, including internal allocations, should be automatically
|
|
//released after the destructor is run
|
|
}
|
|
BOOST_TEST(mrl.m_mismatches == 0u);
|
|
BOOST_TEST(mrl.m_info.size() == 0u);
|
|
}
|
|
|
|
|
|
template<class PoolResource>
|
|
void test_pool_resource()
|
|
{
|
|
test_options_upstream_constructor<PoolResource>();
|
|
test_default_constructor<PoolResource>();
|
|
test_upstream_constructor<PoolResource>();
|
|
test_options_constructor<PoolResource>();
|
|
test_options<PoolResource>();
|
|
test_do_allocate_deallocate<PoolResource>();
|
|
test_do_is_equal<PoolResource>();
|
|
test_release<PoolResource>();
|
|
test_destructor<PoolResource>();
|
|
}
|